Line & Scatter Overlay

import matplotlib.pyplot as plt
import numpy as np

# === STYLE CONFIG ===
COLORS = {
    'primary': '#6366F1',    # Indigo - main accent
    'secondary': '#10B981',  # Emerald - secondary
    'tertiary': '#F59E0B',   # Amber - tertiary
    'background': '#FAFBFC',
    'text': '#1E293B',
    'text_muted': '#64748B',
    'grid': '#E2E8F0',
}

# === DATA ===
x = np.linspace(0, 10, 100)
y_smooth = 4 + 1.5 * np.sin(1.5 * x)

x_points = np.linspace(0, 10, 12)
y_markers = 4 + 1.5 * np.sin(1.5 * x_points) + np.random.normal(0, 0.3, 12)
y_connected = 2 + 0.8 * np.sin(1.5 * x_points + 1)

# === FIGURE ===
fig, ax = plt.subplots(figsize=(10, 6), dpi=100)
ax.set_facecolor(COLORS['background'])
fig.patch.set_facecolor(COLORS['background'])

# === PLOT - Layer by importance ===
# Background layer: connected points (subtle)
ax.plot(x_points, y_connected, 'o-', 
        color=COLORS['tertiary'], alpha=0.7,
        linewidth=1.5, markersize=5,
        markerfacecolor='white', markeredgewidth=1.5,
        label='Series B', zorder=2)

# Mid layer: scatter markers
ax.scatter(x_points, y_markers, 
           color=COLORS['secondary'], s=50, alpha=0.8,
           edgecolors='white', linewidths=1.5,
           label='Observations', zorder=3)

# Top layer: main trend (hero element)
ax.plot(x, y_smooth, 
        color=COLORS['primary'], linewidth=2.5,
        label='Trend', zorder=4)

# === AXES - Minimal and clean ===
ax.set_xlim(0, 10)
ax.set_ylim(0, 7)

ax.set_xlabel('Time', fontsize=10, color=COLORS['text_muted'], 
              labelpad=10, fontweight='500')
ax.set_ylabel('Value', fontsize=10, color=COLORS['text_muted'], 
              labelpad=10, fontweight='500')

# === SPINES - Only bottom and left, subtle ===
for spine in ['top', 'right']:
    ax.spines[spine].set_visible(False)
for spine in ['bottom', 'left']:
    ax.spines[spine].set_color(COLORS['grid'])
    ax.spines[spine].set_linewidth(0.8)

# === GRID - Soft, horizontal only ===
ax.yaxis.grid(True, color=COLORS['grid'], linewidth=0.5, alpha=0.7)
ax.xaxis.grid(False)
ax.set_axisbelow(True)

# === TICKS - Clean and readable ===
ax.tick_params(axis='both', colors=COLORS['text_muted'], 
               labelsize=9, length=0, pad=8)

# === LEGEND - Outside, minimal ===
ax.legend(loc='upper center', bbox_to_anchor=(0.5, -0.12),
          ncol=3, frameon=False, fontsize=9,
          labelcolor=COLORS['text_muted'])

plt.tight_layout()
plt.show()